update CHANGELOG for v3.1.0.pre3
update CHANGELOG for v3.1.0.pre3

antstorm/money,paulodiniz/money,envato/money,gregoryhappyfresh/money,maicoin/money,AlexVPopov/money,nilbus/money,saizai/money,insphire/money,bonusly/money,RubyMoney/money,richardvenneman/money,BrandyMint/money,printercu/money,kewaunited/money,pixeltrix/money,bnmrrs/money